Question

question 4 (1 point) suppose a ball is thrown straight up and experiences no appreciable air resistance. what is its horizontal acceleration just before it reaches its highest point? a) slightly less than g b) exactly g c) zero d) slightly greater than g

Explanation:

When a ball is thrown straight up with no air resistance, the horizontal motion has no forces acting on it (since the throw is vertical and air resistance is negligible). By Newton's second law ($F = ma$), if there's no net force ($F = 0$) in the horizontal direction, acceleration ($a$) must be zero.

Answer:

c) zero